Vibeation dampening mounting



,May lo 1932. VIBRATION DAMPENiNG MOUNTING Re 18,457

uriginal Filed Jan. 1o. 1927 V.be utilized for supportin f5. preferable tol so arrange-t e rubber that themajor thruston the mounting subjected to vibration is resisted through the action of.,`

ARanma!Mural, 1932 Iman c. Loan, or 1mm, PENSYLYANIA VIBBATION DAMPENING MOUNTING Original No. 1,718,508, dated October 14, 193-0, Serial No. 160,223, led January 10, 1927. Application for reissue filed Kal-ch `21, 1932.

In many situations vibration dampening is desirable, asfor example motor mountlngs of different types. Rubber has been used for this purpose and commonly rubber so used has been placed-under compressionin order to secure the parts in their proper relation. While rubber under compression has .some dampenin-gl effect. depending on the amount of compression as ordinarily com ressed this m dampening eil'ect is negligible. y placing the rubber under tension its dampening effect may be very much increased and if it is given H initial tension a small amount of rubber may shear on the rubber and in the present invention the preferred form is so arranged. Here 'itc-both the gravity thrust of the motor and the torque thrust of the motor operate on the rubber in shear. .u

I have exempliiied my invention as a mounting for an automobile motor and Vhave "z5 illustrated the preferred formY ofy carrying out my invention. Features and details of the invention will' appear from the specification and claims. v

The invention is illustrated in the accom- :m panying drawings as follows Fig. 1 shows a sectional view of the mounting on the line 1 1 in Fig. 2.

Fig-2 a sectional view of the mounting on 'the line 2-2 in FigQl. .'13 v Fig; 3 is an end elevation of an ordinary automobile engine with .the mountings in- 1 marks the 'channel `of the automobile frame, 2 a supporting bracket secured to the channel. and 3 an arm extending from the engine frame for supporting the engine 3a,

the motor being of the ordinary automobile type delivering its power through the shaft` crank 3b. t

An opening 4 is formed in the armB pref# erably in a vertical direction. A -steel shell 5 is pressed into this opening preferably with apessed lit. Rubber 6 is secured to the shell 5 Y L bonding during vulcanization and toa central sleeve 7 also by vulcanization.. i

the load. It is.

Serial No. 800,808.

.The sleeve 7 rests on a seat 8 in the bracket 2 and a bolt. 9l extends through the bracket and throught-.he sleeve and is provided with a nut 11l at its upper end which operates on a washer larger than the opening 4 on the upper end andi clamps the sleeve on the seat 8.

y bondingftle rubber during vulcanizationthe rubber in cooling shrinks and puts all the rubber in the mountin under initial tension. By arranging the ru ber mounting with its shells in a vertical direction all the rubber is 4equally engaged in carrying the load and the load is suspended through the rubber medium, the 1rubber being equally stressed in every radial. direction, The vertical arrangement is, therefore, preferable. In any case the rubber should be so proportioned to the load that all the rubber remains under tension under the action of the load'.

Thus the load, or engine is free to move in any direction in response to vibrations butA is restrained within close limits.

Further the rubber with the axis of the joint arranged in a vertical direction, as

illustrated is subjected to shear and this-4 manner of taking the thrust is also-very sensitive to periodic vibrations, and in a ,very efficient manner insulates the member which is provided with periodic vibration producing means, suchas the engine, from theother member which is connected with such vibrat ing member.

It will be understood that lsuch vibrating members have a very definite period and the idea is to-have the mounting out of step with the period of the vibrating member. The period of vibration of a mounting arranged as here illustrated is such that it may be readily arranged to accomplish this purpose in a comparatively small space.

What I claim as new is l. In a' vibration dampening mounting, the combination of a supporting and a supported member, one of said members being provided with periodic vibration producing means and the other of said members being insulated therefrom at the mounting, said members having a normally fixed relation eX- cept for said vibrations, said members having walls with extended opposing surfaces in substantial alinement with the maor thrust under. vibration between the mem rs; and

` a mounting of resilient rubber in tension resisting engagement with Vsaid opposing sur- `faces and resisting the major thrust through shearingvaction on the rubber between its surfaces and the respective opposing surfaces of the said members, the rubber being directly inte d between the engaging surfaces.

2.1'Iiisea vibration dampening mounting, the combination of a supporting and a supported member, one of said members being provided with periodic vibration reducing means and the other of said mem rs bein insulated therefrom at the mountin sai members having a normally fixed relation except for said vibrations, said members havingswalls with extended opposing surfaces in su tantial alinement with the major thrust under vibration between the members; and a mounting of uncompressed resilient rubber in tension resisting engagement with said opposin ,surfaces and resisting the ma]or thrust rough shearing action von the rubber between its surfaces and the respective opposing surfaces of the said members, the rubber being directly interposed between the ing walls with extended opposing surfaces in substantial alinementv with the major thrust under vibration between the mem` bers; and aV resilient rubber Vmember connected with said surfaces through vulcanization, saidrubber being under initial tension and resisting the major thrust through shearing action and tension on the rubber between its surfaces and the respective opposinor surfaces of the said members, the rubber lbeing directly interposed between the engaging surfaces. v

4. In a vibration dampening mounting, the combination of a supporting and a supported member, one of said members being provided with periodic vibration producing means, said members having a normally fixed relation 'xcept for-said vibrations, one of said members having walls with securing surfaces at opposite sides of the mounting and an intermediate member between said.A opposing walls and with opposing surfaces; an a mounting of resilient rubber in tension' resisting engagement with the surfaces of the opposite sides and the opposing surfaces v of the intermediate member and resisting the maj or thrust through shearing action on the rubber between its surfaces and the respective opposing surfaces off the said member,

the rubber being directly interposed between the engaging surfaces. f i

5. In a-vibration dampening mounting, the combination of a supporting and a supported member, one of said members bein provided with periodic vibration p ucil means, said members having a normally fix -relation except for said'vlbrations, oneY of said members having walls with securin surfaces ato posite si esof the'mountin an an interme iate member betweenV sai opposing walls and with opposingssurfaces;A

and a mounting of resilient rubber connected through vulcanization with the surfaces of the op ite sides and the opposing surfaces of the intermediate member and resisting the major thrust through shearing action and tension on the rubber between its surfaces and the respective op sin surfaces of the said members, the ru 'ber ing directly interposed between the engaging surfaces.

6. In a vibration dampening mounting, the

combinatiorof a sup orting anda supported member, onel of sald members bein provided with periodic vibration. pr cing means and the other of saidmembers being insulated therefrom at tlie mounting, said members having a normally fixed relation except for suchvibrations, one of said embers having an annular wall and the othl r of said members a wall intermediate the'y annular wall, said walls presenting opposing sur-- faces; and a mounting of resilient rubber in tension resisting engagement with said opposingsurfaces and reslsting the major thrust .under vibration on the mounting throu h shearing action on theA rubb/er between .its surfaces and the respective op 'osing surfaces of the said members, the rubber being directly interposed between the engaging'surfaces.

7. In a vibration dampening mounting, the combination of a supportingl and a support.- ed member, one of said members being provided with periodic vibr/a/tion producing means and the other of said niembers being insulated ,therefrom at the mounting, said members having a normally lixed relation except for such vibrations, one of said members having an annular wall and the other of said l members a wall intermediate the annular wall, said walls presenting opposing surfaces; and a mounting of resilient rubber under initial tension secured tothe opposing Asurfaces by vulcanizationY and resisting the major thrust under vibration on the mounting through shearing action on the rubber between its surfaces and the respective opposing surfaces'of the said members, the rubber being directly interped by the engaging surfaces. l

l8.- In a vibration dampening mounting.- the combination of a supporting and a supported member, one of said members being provided' with periodic vibrationv producing means and the other of said members being the mounting through shearing action on the rubber between its surfaces and the respective opposing surfaces of the said members, the rubber being directly interposed between the engaging surfaces.

In a vibration dampening mounting,

the combination of a supporting and a supportedmember, one of said members being provided with periodic vibration producing means and the other of said members being insulated therefrom at the mounting, said members having a normally fixed relation except for such vibrations, one o'f said members having an annular wall with an axis in substantial alinement with the major thrust under vibration and the other of said members a wall intermediate the annular wall, said walls presenting opposin surfaces; and a mounting of resilient rub er secured to the opposing surfaces bg vulcanization and resisting the major t rust through the mounting through shearing action on the rubber between its surfaces and the respective o posing surfaces of the said members, the ru ber being directly interposed between theI en aging surfaces.

10. n a` vibration dampening mounting,

-the combination of a supporting and a supported member, one of said members being provided with periodic vibration producing means and the other of said members being insulated therefrom at the members having a normally fixed relation. except for such vibrations, one of said members having an annular wall and the other of said members a wall intermediate the annular wall, said Walls presenting opposing surfaces; and a mounting of resilient rubber under initial tension secured to said surfaces by surface bonding and resisting the major thrust under vibration through the tension o1 the rubber, the rubber being directly interposed between the opposing surfaces.

11. In a vibration dampening mounting, the combination of a supporting and a supported member, one of said members being provided with periodic vibration producing means and the other of said members being insulated therefrom at the mounting, said members having a normally fixed relation except for such vibrations, one of said members having an annular wall and the other of said members a wall intermediate the annular v wall, said walls presenting opposing su'rmounting, said 4 faces; and a mounting of resilient rubber` under initial tension secured to said surfaces by surface bonding and resisting the major thrust in the direction of the axis `of the annular wall, the rubber being directly interposed between the opposing surfaces.

12. In a vibration dampening mounting, the combination of a supporting and a supported-member, one of said members being provided with periodic vibration reducing means and the other of said memgers bein insulated therefrom at the mounting, sai members having a normally fixed relation except for said vibrations, said members having walls with extended vertical opposing surfaces, and a mounting of resilient rubber 1n tension resisting -engagement with said opposing surfaces and sustaining the major portion of the load through shearin actionl on the rubber between its surfaces and the respective op osing surfacesof the said members, the ru ber being directly interposed beween the opposing vertical engaging suraces.

13. In al vibration dampem'ng mounting, the combination of a supporting and a supported member, one of said members being provided with periodic vibration reducing means and the other of said mem ers bein insulated therefrom at the mounting, sai members having a. normall except for said vibrations, said members having walls with extended vertical o posing surfaces, and a resilient rubber meml r connected with said surfaces through vulcanization, said rubber bein under initial tension v and sustaining the ma] or portion of the load through shearing action and tension on the rubber between lts surfaces and the respective opposing surfaces of said members, the rubber being directly interposed between the opposing vertically connected surfaces.

14. In a vibration dampening mounting, the combination of a supporting and a supported member, one of said members being provided with periodic vibration producing means, and the other of said members being insulated therefrom at the mounting, said members having a normally fixed relation except for said vibration, one of said members having walls with securing vertical surfaces at opposite sides of the mountin and an intermediate member between sai opposing walls, said intermediate member having opposing vertical surfaces; and a mounting of resilient rubber. in tension-resisting engagement with the surfaces of the opposite sides and the opposing surfaces of the intermediate member and sustaining the maj or portion of the load through shearing action on the rubber between its surfaces and the respective opposing surfaces on the members, the rubber being directly interposed between the engaging surfaces. Y

15. In a vibration dampening mounting,

fixed relation Q vibrato members havin a normally fixed relationexf;

cept for said vi rations, one of said membe having an -annular wall and the'other ofsaidgmembers a wall intermediate the annular'4 wall, said walls presenting opposing vertical surfaces; and a mounting of resilient rubber in tension-resisting engagement with said opposing surfaces and sustaining themajor portion of the load through shearing action respective o posing surfaces of the said members, the ru ber being directly interposed between the engaging surfaces.

' 16. In a vibration dampenng mounting,

l ifthe combination ofa 'supporting and a suprted member, one of said members being rovided withperiodic vibration producing means and the other of said members being `insulated -therefromat the mounting, sai members havin a normally fixed relation except forsaid vibrations, one of said members having an annular wall and the other of said members a wall intermediate the annular wall, said walls presenting vertical opposl.' ing surfaces; and a mounting of resilient rubber under initial tension securedto said surfaces by surface bonding and sustaining the -major portion of the load through the rub- A ber directly interposed between said surfaces.

si 17..In a vibration dampenng mounting, the combination of a supporting member and a supported member, one of said members being provided with vibration -producing 'means, and a mounting of resilient rubber `bonded to one of said members and disposed Yin thrust resisting relation with the other member, said mounti g including a bod of rubber projecting from the memberl to w ich the mounting is bonded and so Adisposed asy to receive the thrust through shear stress,

vthe shear being in the direction of the vibra- -tory thrust to be 'absorbed by the mounting. 18. In a vibration dampening mounting, the combination of a .supporting member andV a supported member, one of saidfmembers being provided withV vibration producing means, and a mounting ofv resilient rubber bonded `to one of said members and disin thrust resisting relation with the other member, said mounting includin a body of rubber projectingxrom the mem r to which the mounting is posed as to receive the thrust through shearstress, the shear'beng in the direction of the ing, sai bod absorbing through its shear 1 distortion at east the ma'or portion of said vibratory thrust absorbe by the mounting.

. 19. In a vvibration dampenng mounting, the combination of a supporting member and the v'other member bein on the rubber between its surfaces and the the other member being nded and so dis-4 thrust tobe absorbed by the mountmaar a' supported member, one of said members being provided with vibration producing A:means and a mounting of resilient rubber lbmei di bhe bod ringin'cu'ngaru rA ro'ectin from .n e of the members and'gopdigposec 'receive the thrustthrou h shear stress, the

lto each ofthe members, said mountasto ear-bein inthe direction of the vibratory absorbed by .the mounting and in thrust resisting relation to the rubber y in the direction 'of shear.

20. In a vibration dampenng' mounting, the combination 'of a supporting member and a supported; member, one of said members being provided with vibration producing means, and a mounting of resilient rubber bonded to each of the members, said mounting includingla rubber body proj ectin from one of the members and so ,dispose as to receive the thrustth'rough shear stress, the

shear being in the direction of the vibratory thrust to beabsorbed by the mounting and in thrust resisting relation to the' rubber body in the direction of shear, saidsbodyv absorbing through its shear distortion at least the ma or ortion of said vibratory thrust absorbed y t e mounting.

21. In a vibration dampenng mounting, the combination of a supporting member and a supported member, one of said members being provided with vibration producing means and having a wall with an attaching surface extending in the direction of the vibratory thrust of the vibration pro ducing means and a mounting' of resilient rubber bonded to said attaching projecting therefrom and so disposed as to receive the thrust' through shear stress, the other of said members being disposed in thrust resisting relation with said body in the direction of shear.

22. In a vibration dampenng mounting, the combination of a supporting member and a supported member, one of said members being provided with vibration producing.

means and having a wall with any attaching surface extending in the direction of the vibratory thrust of the vibration producing means anda mounting of -resilient rubber bonded to said attachin surface and projecting therefrom andso isposed as to receive the thrust lthrough shear stress, the other of said members bein disposed in thrust resisting relation wit said body in the direction of shear, said bod absorbing through its shear distortion at east the major portion of said vibratory thrust absorbed by the mounting.

23. In a rubber dampenng mounting, the combinationof a supporting member and a supported member, one of said members havin vibration producing means and one of sai members having oppositely disposed surface v and iio attaching parts, and a mounting of resilient rubber bonded to said parts, said mounting including rubber portions interposed between the attaching parts to which the rubber is 5 bonded and so disposed as to receive the thrust through shear stress, the shear being in the direction of the vibratory thrust to be A absorbed by the mounting, said resilient mounting being in thrust-resisting relation 1o to the other of said members. l

24:. In a rubber dampening mounting, th combination of a supporting member and a supported member,one of said members having vibration producing means and one of said members having oppositely disposed attaching parts, and a mounting of resilient rubber bonded to said parts, said mounting including rubber portions interposed between tlie attaching parts to Which the rubber is bonded and so disposed as to receive the thrust through shear stress, the shear bein in the direction of the vibratory thrust to e absorbed by the mounting, said resilient mounting being in thrust-resisting relation to the other of said members, said rubber portions absorbing through shearl distortion of the rubber at least the major portion of said vibratory thrust absorbed by the mounting.

In testimony whereof I have hereunto set 2C my hand.

HUGH C. LORD. 

